Theologische Frage des Tages Nr. 3: Woraus zitiert Jesus in Matthäus 21:13 / Lukas 19:46?

Frage berechtigt, da es in diesem Wortlaut nirgendwo im Alten Testament vorkommt.

Bibelkommentar von Albert Barnes (Barnes' Notes, Passage Mt 21:13, Hervorhebungen von den Autoren dieser Website)

And said It is written ... - This is written in Isa_56:7. The first part of this verse only is quoted from Isaiah. The rest - “but ye have made it a den of thieves” - was added by Jesus, denoting their abuse of the temple. Thieves and robbers live in dens and caves. Judea was then much infested with them. In their dens thieves devise and practice iniquity. These buyers and sellers imitated them. They made the temple a place of gain; they cheated and defrauded; they took advantage of the poor, and, by their being under a necessity of purchasing these articles for sacrifice, they “robbed” them by selling what they had at an enormous price.
The following reasons may be given why this company of buyers and sellers obeyed Christ:
1. They were overawed by his authority, and struck with the consciousness that he had a right to command,
2. Their own consciences reproved them; they knew they were guilty, and they dared make no resistance.
3. The people generally were then on the side of Jesus, believing him to be the Messiah.
4. It had always been the belief of the Jews that a “prophet” had a right to change, regulate, and order the various affairs relating to external worship. They supposed Jesus to be such, and they did not dare to resist him.
Mark and Luke add, that in consequence of this, the scribes and chief priests attempted to put him to death, Mar_11:18-19; Luk_19:47-48. This they did from “envy,” Mat_27:18. He drew off the people from them, and they envied and hated him. They were “restrained,” then, for the fear of the people; and this was the reason why they plotted “secretly” to put him to death, and why they afterward so gladly heard the proposals of the traitor, Mat_26:14-15.

Bibelkommentar von Jehovas Zeugen (si S. 124 Abs. 3 24., Hervorhebungen von den Autoren dieser Website)

Daß Jesus das Buch Jeremia studiert hatte, ist klar ersichtlich, da er die Ausdrucksweise von Jeremia 7:11 mit der von Jesaja 56:7 verband, als er den Tempel reinigte (Mar. 11:17; Luk. 19:46).